<template>
    <div>
        Hello world

    </div>
</template>

<script>
  export default {
    name: 'Test',
    props: {
      open: Boolean
    },
    data() {
      return {
        open_: this.open
      }
    },
    methods: {
    },
    watch: {
      open: function(b) {
        console.log('============watch========' + b)
        this.open_ = b
      }
    }
  }
</script>

<style scoped>

</style>
